netdev - Re: [PATCH v2 net-next] net: introduce gro_frag_list

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Message-ID: <20131030020543.GA1925@gondor.apana.org.au>
Date:	Wed, 30 Oct 2013 10:05:44 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	David Miller <davem@...emloft.net>
Cc:	eric.dumazet@...il.com, christoph.paasch@...ouvain.be,
	netdev@...r.kernel.org, hkchu@...gle.com, mwdalton@...gle.com
Subject: Re: [PATCH v2 net-next] net: introduce gro_frag_list_enable sysctl

On Tue, Oct 29, 2013 at 10:02:53PM -0400, David Miller wrote:
> From: Eric Dumazet <eric.dumazet@...il.com>
> Date: Tue, 29 Oct 2013 17:53:48 -0700
> 
> > So should we apply the first fix to avoid the BUG_ON() ?
> 
> Please be more specific, are you talking about splitting up
> this patch in some way?

I think Eric is referring to the patch that removes the BUG_ON
in skb_segment and deals with the new mega-GRO packets.

I think that's fine for stable, but for the long term we should
fix it properly as these new meag-GRO packets still retain the
existing packet boundaries and are trivially segmentable.

If we are indeed able to do that, I doubt we would even need
the sysctl patch since the GRO performance should be vastly
superior to the non-GRO case, even for a router/bridge.

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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